Mathematics, 23.10.2019 17:20, ellie4678

Of 100 clock radios with digital tuners and / or cd players sold recently in a department store, 70 had digital; tuners and 90 and cd players. how many radios had both digital tuners and cd players?

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Of 100 clock radios with digital tuners and / or cd players sold recently in a department store, 70...